>Not sure how to say it but they state the exact opposite! Modern processors are not pdp-11 emulators.
The author very clearly states that modern processors _are_ presenting a PDP-11 interface. The author argues that they shouldn't be doing that, but all modern processors are still presenting a pdp-11 like abstract machine:
> The root cause of the Spectre and Meltdown vulnerabilities was that processor architects were trying to build not just fast processors, but fast processors that expose the same abstract machine as a PDP-11.
The author very clearly states that modern processors _are_ presenting a PDP-11 interface. The author argues that they shouldn't be doing that, but all modern processors are still presenting a pdp-11 like abstract machine:
> The root cause of the Spectre and Meltdown vulnerabilities was that processor architects were trying to build not just fast processors, but fast processors that expose the same abstract machine as a PDP-11.